The first crossover between DC’s Green Lantern Corps and the alternative timeline crew of the USS Enterprise ended in victory—but at great cost, with the Lanterns unable to return to the DC Multiverse. The crossover’s sequel, which begins next week, picks up right where the first crossover left off: with the Green Lanterns finding themselves slowly losing their powers.
Source: io9 – The Green Lanterns are Stuck in Star Trek’s Kelvin Timeline in the Next Star Trek/Green Lantern Crossover